Typewriting machine



Aug. 31 1926.

J. B. HOLDEN TYPEWRI T I NG MACHI NE INVENTOR X3. JMM' i o/b L 'ITORNEYFiled May 6, 1925 WITNESSES i? 7. M. W @0 4 i'atented Aug. 31, 192%,

JOSEPH B. HOLDEN, OF SYBAGUSE,

NET I YO @EHQE.

TYPEWRITING. HAUL-11H E.

Application filed May 6, 1&25.

My invention relates to paper controlling bails for typewritingmachines, and its gen eral object is to provide a new and improved bailor pressure device, and one in which the pressure or tension of the bailrolls may be effectively regulated so as to produce uniformity of actionand effect in paper feeding and controlling operations. Morespecifically, my invention is an improvement on the paper controllingbail disclosed and claimed in the prior application of Joseph Phelps,Ser, No. 27,281 filed May 1, 1925.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, combinations of devices andarrangements of parts hereinafter described and particularly pointed outin the appended claims.

In. the accompanying drawings which illustrate the preferred form of myinvention.

Figure 1 is a fragmentary end view of the platen carriage of a No. (30Smith Premier typewriting machine and its mounting, my novel papercontrolling bail being shown applied to said carriage.

Figure 2 is a fragmentary front view of said bail and its mountingassociated with the platen, the view being taken on the line of thearrow in Fig. 1.

Figure 3 is an enlarged fragmentary vertical sectional view taken on aplane substantially corresponding to the dotted line 1-1 in Fig. 2 andlooking in the direction of the arrows at said line.

Figure 41- is a view corresponding generally to Fig. 3 but showing thebail rolls readjusted.

As will be seen from Fig. 1 of the drawing, the top plate 1 of themachine is surmounted by stationary brackets 2, spaced apart one at eachside of the top plate. The brackets are only fragmentarily shown hereinbut are rearwardly curved or goosenecked as in the No. Smith Premiermachine. Secured to the upper end portions of the brackets 2 by screws 3is a stationary guide rail the lower portions of the brackets havingsecured to them by screws 5 a guide rail 6. The guide rails are paralleland are oppositely grooved to receive anti-friction rollers 7, whichrollers cooperate also with grooves formed in the Serial No. 28,285.

top and bottom faces of a slide bar 8 comprised in a traveling platencarriage which further includes end bars 9 secured to and extendingforward from the ends of the bar 8. The carriage or platen framecomprising the rear bar 8 and end bars 9 rotatably supports acylindrical platen 10 pro- Vided with axle portions 11 and 12 whichproject from the ends of the platen and bear in the end bars 9. he usualline spacing devices are provided for turning the platen in itsbearings, said platen rotating on an unvarying axis indicated in Fig. 2by the dotted line The usual printing instrumentalities, not shown,cooperate with the front face of the platen. Paper feeding deviceswhereby the paper is advanced around the platen and up over the printingface thereof comprise pressure rollers lat and 15 which areconventionally shown in Figure 1.

The supporting devices for the paper controlling bail hereinafterdescribed comprise a rod or bar 16 which is fixed on the platen frame bymeans comprising'binding screws 18 and 19 that are threaded into the rod1 through the endbars 9 of the platen frame or carriage. Fixed rigidlyto the rod 16 inside the left-hand end bar of the carriage is aforwardly extending arm or bracket member 21 which is provided with anangularly shaped extension or strengthening portion 22, the arm 21, 22being keyed to the rod 16 so that it cannot turn thereon, and being alsoheld or fixed against movement lengthwise of said rod. Fixed also to therod 16 inside the carriage near its right hand end is a secondsupporting arm 22-3, said arm being further'stabilized by a screw pin 24threaded through the end bar 9 a d engaging in a hole in the arm 28. Thearm 23 terminates in line with the arm 21. the two arms providingsupports for the bail or paper controlling contrivance, said supportsbeing fixed relatively to the platen frame or carriage.

The pressure member or paper bail proper comprises a roll rod or bar 25,to the ends of which are rigidly secured short arms 26, the rod and armsconstituting a roll carrying member. The arms are keyed on the ends ofthe rod and are secured in place by screws 27. ridjustably mounted onthe rod 25 so lsFiSIGNGR TO REMINGTGN TYPEW'RITER that they may be slidto desired positions, are bail rolls, there being two such rolls in thepresent instance, numbered 28 and 29. The bail proper is mounted on theplaten frame in a novel manner by means comprising what may be termed alinkage connection, said connection being constituted by a pair of armsor links 30 and their hub or stud portions 31. The rear or free ends ofthe arms 30 are formed with holes whereby the arms are enabled to fitloosely over the rod inside the associate bail arms 26. The studportions '31 which have a keyed connection with the forward ends of thearms are secured in place by screws 32 and extend outward from the arms,terminating in squared or rectangular portions 33 which are separatedfrom the body of the studs 31 by flanges 34%. The outer ends of thestuds receive headed and shouldered screws 35 which pass through bearingopenings in the associate arms 21 and 23 and are threaded tightly intothe studs. the screws proi 'iding pivotal supports for the arms 30 andalso for the entire bail or pressure contrivance when it is in operativecondition that is, when the arms 30 and 26 are clamped together ashereinafter described. The center of rotation of said entire bail passesthrough the axes of the studs 31 and is fixed and unvarying relativelyto the platen frame. As in the prior Phelps construction aforesaid, thebail is provided with hairpin springs 56 which are loosely mounted byscrews 36 on arms 21 and 23 and co-operate with the squared portions 38of the studs to maintain the bail contrivance in spring pressedrelationship with the platen and also to hold it in inoperative orthrown-off positions away from the platen. The springs are confinedloosely between the flanges 34 and the associate supporting arms. Saidsprings co-act with opposite corners of the squared portions 33 to holdthe bail contrivance spring pressed to the platen. They engage withopposite parallel faces of the squared portions 33 to maintain the bailin thrown-oil or released positions. Secured in place by the right-handscrew 32 is a stop plate 37 provided with stop faces 38and 39 which areco-operative with a pin or stud 4C0 on the arm 23 to limit positivelythe rotary n'iovements of the right-hand arm 30 and consequently of thehail, the plate 37 turning with said arms 30. To manipulate the bail,the arms 30 are provided with extensions 30 which are shaped to formlinger pieces by which the bail may be swung or turned into and out ofoperative position.

The arms 30 lie close against the short arms 26 of the bail proper withwhich they are adjustably connected by devices preferably in the form ofscrew and slot connections, the arms 30 being formed with transverselyelongated holes 41 through which pass the shanks of beaded screws 42that are threadel from the inside into the arms 26, as most clearlyappears from Fig. 2. The screw heads abut agains the inner faces of tl earms 30, and said screws when tightened serve to clamp or fix theassociate arms 26 and 30 together. he connection ll, -12 allordsadjustment in the relationship between the arms 30 and 26, suchrelationship being variab e at will and resulting in consequentvariation in the normal relationship between the bail rolls and theplaten transve 3* considered. i'ilter such adjustor re-adjustment, thescrews on being 1 'ened clamp the pairs of arms 26 and 30 together,causing them to act as a unit. and in elf st constituting a single bailmember comprising the bail rod 25 with its rolls, the two-part crankarms 26 and 30 and also the studs or pivotal portions 81, 33 andllcretofore dilliculty has been encountered in causir the bail rolls orpres ure devices to bear evenly against and cooperate uniforn'ily withthe platen. This difiiculty may be due to several causes, such asvariations in the platen surface, slight differences in the diameters ofrolls thernselvcs slight dcviations of the bail rod from a. straightline, and the like. My present invention provides for conveniently andeffectively adjusting the rolls tra sversely of the platen so that theirnormal position may be altered and they may bear uniformly on theplaten, the means employed for this purpose not interfering with thestability and substantial construction of the bail coir trivanee as awhole. In order to illustrate the use to which the invention may be put,I have shown in Figures 2 and of the drawings the left-hand bail roll 28hearing against the platen and the right-hand bail roll 29 separatedfrom the platen so as to be ineffective. in this position of the parts,it will be observed that the bail rod axis, indicated in Fig. 2 by thedotted line g 7 is out of parallelism with the platen axis [L -d Theseparation. of the roll 29 is somewhat exaggerated for the sake ofclearness of illustration. In order to adjust the parts in. propernormal relationship it is only necessary to loosen the right-handclamping screw $2. This enables the righthand end portion of the rod 25together with the crank arm 26 fixed thereto to be swung downwardtowards the platen and transversely or adially thereof until theright-hand roll 29 is brought into engage ment or contact with theplaten surface in uniformity with the left-hand roll 28 as shown in Fig.4. platen axis and the bail rod axis are broun l'lt into substantialparallelism. Dnr ing this downward swing. the angular relationshipbetween the arms 26 and 30. is slightly altered, the forward end of thearm By this adjustment the 26 which carries the screw 42 moving downwardin the hole or slot-way 41. At the same time the arm 30, acting ineffect as a link, will swing downward about its fiXed center or axis 35.After the adjustment, the right-hand screw 42 is tightened, reclampingthe right-hand arms 26 and 30 together, thus rendering the bailoperative and in condition such that its rolls 2% and 29 norn'iallyexert a uniform tension and bear evenly against the platen as they turnor rotate on the rod :25. It will be understood, of course, that whennecessary or desirable, the left-hand end portion of the bail also maybe re-adjusted after the left-hand screw 42 is loosened; or that bothscrews may be loosened to afford re-adustment of the bail. Theconstruction involving the two-part adjustable arms afford means to meetall requirements of re-adjustment that may be met with in practice,enabling the rolls to be moved towards and away from the platen surface,and thus providing for uniformity of pressure of the bail rolls andconsequent even feeding of the work sheets. The bail rolls are in effectpaper-pressing and feeding units, and the rod on which they are mountedis provided with means whereby each end may b adjusted independently ofthe other, thus affording independent adjustment of the pressure exertedby said units. Inother words, one of the paper pressing units may beadjusted to alter its pressure without materially affecting the pressureof another of said units.

The invention may readily be adapted to styles of machines other thanthat shown; and various changes may be made without departing from theinvention.

What I claim as new and desire to secure by Letters Patent is 1. In atypewriting machine, the combi nation of a platen; a platen frame; abail rotatable about an unvarying axis on said frame, said bailcomprising side portions, a bail rod fixed at its ends to the sideportions, and rolls on said rod; and means between the bail axis and thebail rod for adjusting said rolls towards and away from the surface ofthe platen to vary the normal relationship of the rolls and the platen.

2, In a typewriting machine, the combination of a platen, a platenframe, a bail pivoted thereon, the bail axis being unvarying and thebail rod being fixed to the side portions of the bail, and means forvarying the normal relationship between the platen axis and the axis ofthe bail rod.

3. A paper controlling bail for typewriting machines comprising a bailrod and side arms, each side arm being composed of two parts that arerelatively adjustable, and being provided with devices for maintain ingthe two parts set in adjusted relation ships.

4, A paper controlling bail for typewritingmachines comprising a ballrod and side portions, means being provided for maintaining said bailrod in adjusted relationships relatively to said side portions.

5, In a typewriting machine, the combination of a platen, a platenframe, arms pivoted on said platen frame, a bail member comprising a rodand rigidly attached side arms, and devices for securing together saidside arms and said first recited pivoted arms in set relationship.

6. In a typewriting machine, the combination of a platen, a platenframe, arms pivoted thereon, a bail member comprising a rod and armsrigidly attached to the ends of said rod, and screw and slot connectionsbetween said rigidly attached arms and said pivoted arms.

7. In a typewriting machine, the combination of a platen, a platenframe, a bail rod, rolls thereon, arms pivoted to said platen frame andhaving loose pivotal connections with said bail rod, and means forfixing said arms in variable relation with said bail rod.

8. In a typewriting machine, the combination of a platen, a platenframe, pressure rolls, a roll carrying member, arms pivoted to saidplaten frame and loosely connected with said roll carrying member at itsends, and means for variably fixing the relationship between said rollcarrying member and said arms.

9. In a typewriting machine, the combi nation of a platen, a platenframe, pressure rolls, a roll carrying member, arms pivoted to saidplaten frame and loosely connected with said roll carrying member at itsends, and devices at each arm operating independently of each other forvariably fixing the relationship between the arms and the bail member.

10. In a front strike typewriting machine, the combination of a platen,a platen frame, a roll carrying member, a plurality of rolls on saidmember cooperative with the platen above the printing line,spring-pressed arms loosely connected. with said member and extendingforward therefrom, said arms being pivotally connected to the platenframe forward of the platen, and devices for securing the roll carryingmember and said arms in set relationships, the arms being adjust-ableindependently of each other relatively to said roll carrying member.

11. In a typewriting machine, the combination of a platen, a platenframe, a bail member comprising a rod and arms rigidly fixed thereto,and a linkage connection between said platen frame and said bail member,said linkage connection having a normal relationship with said bailmember that is adjustable at will.

12. In a typewriting machine, the combination of a platen, a platenframe, a bail member comprising a rod and arms rigidly fixed thereto,links connecting said bail member to said platen frame, and devicesco-operating with said links and said arms for securing said links andsaid member in set relationship, said relationship being variable atwill.

13. In a typewriting machine, the combination of a platen, a platenframe, a bail member comprising a rod and arms rigidly fixed thereto,links connecting said bail member to said platen frame, and clampingscrews threaded into said arms and passing through enlarged openings insaid links,

said screws being operative to variably clamp said links.

M. In a ty )ewrit-inig machine, the combination of a p aten, a rodarranged longitudinally of the platen and mounted to move to and fromsaid platen, paper pressing and feeding units mounted on said rod, andvmeans for independently adjusting each end of the rod and therebyindependently adjusting the pressure of said pressing and feeding units.

Signed at Syracuse, in the county of Onondaga and State of New York,this 2 day of May, A. D. 1925.

JOSEPH l3. HOLDEN,

